Wet flue gas desulfurization device

Abstract

The utility model relates to the technical field of flue gas desulfurization, in particular to a wet flue gas desulfurization device which comprises a desulfurization tank, a flue gas inlet pipe is assembled on the lower portion in the desulfurization tank, the lower end of the flue gas inlet pipe is assembled on the outer wall of the lower portion of the desulfurization tank in an inserted mode, and air outlet holes are evenly formed in the inner wall and the outer wall of the flue gas inlet pipe. A spraying ring cover and a re-spraying ring cover which are the same are assembled on the inner wall of the desulfurization tank, the re-spraying ring cover is located above the spraying ring cover, a rotating rod is assembled at the top of the desulfurization tank in an inserted mode, an outer stirring frame and an inner stirring frame are hoisted below the rotating rod through a hanging bracket, and the inner stirring frame is located in the outer stirring frame. Inner rings and outer rings are fixed at the upper ends and the lower ends of the inner stirring frame and the outer stirring frame, and the upper end of the outer stirring frame and the upper end of the inner stirring frame are supported and assembled through reinforcing ribs. According to the utility model, the flue gas can be dispersed and injected conveniently when being introduced, and meanwhile, the reagent can be used circularly and repeatedly and the reaction is accelerated by stirring during spraying, so that the operation and the use are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas desulfurization, in particular to a wet flue gas desulfurization device. Background Technique

[0002] Wet desulfurization is a commonly used method for flue gas treatment. The desulfurization system is located at the end of the flue and behind the dust collector. Commonly used wet desulfurization can be roughly divided into two types: the gypsum method and the disposal method. Among them, the disposal method means that the flue gas is introduced into a tank and sprayed with a reaction reagent. For example, a slurry of limestone or lime is used as the desulfurizing agent, and the SO2 flue gas is sprayed and washed in the absorption tower.

[0003] In this regard, Chinese Patent Application No.: CN202221026254.7 discloses a wet flue gas desulfurization device, which is arranged in a desulfurization tower to spray a spray liquid to adsorb sulfur dioxide in the flue gas. The desulfurization device includes a spray layer unit, a bracket and a guide ring. One end of the bracket is perpendicular to the inner wall of the desulfurization tower, and the other end extends into the desulfurization tower to connect the spray layer unit. The spray layer unit includes a main pipe. One end of the main pipe extends out of the desulfurization tower and is connected to a water pump. The other end of the main pipe is connected to a number of branch pipes. Below each branch pipe, there are several rotatably connected nozzles. The spray liquid enters each branch pipe from the main pipe and finally sprays out from each nozzle, increasing the contact area between the spray liquid and the flue gas. A guide ring is arranged below the spray layer unit on the inner wall of the desulfurization tower. The lower side of the guide ring is provided with a guide inclined surface that inclines inward and upward, and the flue gas flowing along the tower wall can gather towards the middle along the guide inclined surface.

[0004] However, the existing wet flue gas desulfurization device is inconvenient to disperse and pour in when introducing flue gas, and at the same time, it is inconvenient to recycle the reagent and stir to accelerate the reaction during spraying, which affects the operation and use efficiency.

[0005] Therefore, in order to solve the above problems, a wet flue gas desulfurization device is proposed. Content of the Utility Model

[0006] The purpose of the utility model is to provide a wet flue gas desulfurization device to solve the problem that the existing wet flue gas desulfurization device in the above background technique is inconvenient to disperse and pour in when introducing flue gas, and at the same time, it is inconvenient to recycle the reagent and stir to accelerate the reaction during spraying, which affects the operation and use efficiency.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A wet flue gas desulfurization device includes a desulfurization tank. On both sides of the top of the desulfurization tank, an exhaust pipe and a pressure gauge are assembled. The bottom of the desulfurization tank is supported by a support frame, and a bracket is assembled between the support frames.

[0008] A flue gas inlet pipe is assembled below the interior of the desulfurization tank. The lower end of the flue gas inlet pipe is inserted and assembled on the outer wall of the lower part of the desulfurization tank. The inner and outer walls of the flue gas inlet pipe are evenly provided with air outlet holes. The inner wall of the desulfurization tank is assembled with a spray ring cover and a double spray ring cover of the same type, and the double spray ring cover is located above the spray ring cover. A rotating rod is inserted and assembled at the top of the desulfurization tank. A stirring outer frame and a stirring inner frame are suspended below the rotating rod through a hanging bracket, and the stirring inner frame is located inside the stirring outer frame. Inner ring rings and outer ring rings are fixed at both the upper and lower ends of the stirring inner frame and the stirring outer frame, and the upper end of the stirring outer frame and the upper end of the stirring inner frame are supported and assembled through a reinforcing rib.

[0009] Preferably, the lower end of the flue gas inlet pipe and the lower side wall of the desulfurization tank are hermetically assembled through a sealing flange. The air outlet holes are opened in the middle and lower part of the side wall of the flue gas inlet pipe, and the air outlet holes are inclined from the inside to the outside.

[0010] Preferably, spray heads are evenly assembled inside the spray ring cover and the double spray ring cover, and the two groups of spray heads are respectively assembled horizontally and obliquely. A liquid inlet pipe is connected and assembled on the side of the spray ring cover. The liquid inlet pipe is assembled on the side wall of the desulfurization tank, and a docking head is integrally provided at the outer end of the liquid inlet pipe.

[0011] Preferably, a liquid collection bin is assembled at the bottom of the desulfurization tank, and a groove communicating with the liquid collection bin is opened at the bottom of the desulfurization tank. A filter cover is assembled inside the liquid collection bin. A lower liquid pipe is integrally provided at the bottom of the liquid collection bin. A plug is threadedly sleeved at the bottom end of the lower liquid pipe. A pump is arranged on the side of the lower liquid pipe, and the pump is assembled on the surface of a bracket. The pump is connected and assembled with the side of the lower liquid pipe through a liquid extraction pipe. The pump is connected and assembled with the double spray ring cover through a liquid outlet pipe, and the liquid outlet pipe is assembled on the outer wall of the desulfurization tank through a support sleeve.

[0012] Preferably, a sealing sleeve is adhesively bonded to the inner wall of the plug. A frame is arranged on the side of the filter cover, and an inner handle is assembled on the left side of the filter cover. Limit inner rings are arranged at the upper and lower ends of the filter cover, and the limit inner rings are fixed on the inner wall of the liquid collection bin. A taking groove corresponding to the filter cover is opened on the left side of the liquid collection bin, and a sealing plate is assembled on the left side of the liquid collection bin, and an outer handle is assembled on the outer wall of the sealing plate.

[0013] Preferably, a bearing is assembled between the upper part of the rotating rod and the top of the desulfurization tank. The inner ring of the bearing is fixed on the outer wall of the rotating rod, and the outer ring of the bearing is fixed on the inner wall of the desulfurization tank. The top end of the rotating rod is connected with a servo motor through a coupling. The servo motor is assembled on the top of the desulfurization tank. A maintenance cover is assembled on the inner top wall of the desulfurization tank, and the maintenance cover is sleeved on the upper part of the rotating rod.

[0014] Preferably, the outer stirring frame and the inner stirring frame are sleeved and assembled with auxiliary mesh plates, and air holes are formed inside the auxiliary mesh plates. The three groups of auxiliary mesh plates are respectively located above the spray ring cover and the re-spray ring cover, and guide rings are arranged on the sides of the auxiliary mesh plates. The three groups of guide rings are respectively fixed on the top side walls of the spray ring cover and the re-spray ring cover.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model facilitates the dispersed influx when introducing flue gas, and at the same time facilitates the recycling of reagents and stirring to accelerate the reaction during spraying, making the operation and use more convenient;

[0016] 1. By providing a flue gas inlet pipe and the outlet holes, the present utility model facilitates the dispersed influx of flue gas when introducing it, making the subsequent desulfurization operation more convenient. Through this design, the convenience and practicality of the wet flue gas desulfurization device are improved.

[0017] 2. By providing a spray ring cover and a re-spray ring cover, the present utility model facilitates the continuous multiple spraying of flue gas. At the same time, with the cooperation of the rotating rod, it is convenient to drive the outer stirring frame and the inner stirring frame to stir the inside thereof, facilitating the acceleration of the reaction and making the operation and use more convenient. Through this design, the convenience and practicality of the wet flue gas desulfurization device are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a front sectional view of the structure of the present utility model;

[0019] Figure 2 is a top sectional view of the structure of the present utility model;

[0020] Figure 3 is the present utility model Figure 1 is an enlarged view of the structure at A in the present utility model;

[0021] Figure 4 is the present utility model Figure 1 is an enlarged view of the structure at B in the present utility model;

[0022] Figure 5 is the present utility model Figure 1 is an enlarged view of the structure at C in the present utility model;

[0023] In the figure: 100, desulfurization tank; 101, support frame; 102, bracket; 110, exhaust pipe; 120, pressure gauge; 200, flue gas inlet pipe; 201, sealing flange; 210, air outlet hole; 300, spray ring cover; 301, spray head; 302, liquid inlet pipe; 303, docking head; 304, guiding ring; 400, re-spray ring cover; 410, liquid collection bin; 411, sealing plate; 412, outer handle; 420, filter cover; 421, inner handle; 422, limiting inner ring; 430, lower liquid pipe; 431, plug; 432, sealing sleeve; 440, pump; 441, liquid suction pipe; 442, liquid outlet pipe; 443, support sleeve; 500, rotating rod; 501, bearing; 502, coupling; 503, servo motor; 504, maintenance cover; 510, stirring outer frame; 511, outer ring; 512, reinforcing rib; 520, stirring inner frame; 521, inner ring; 522, hanging bracket; 530, auxiliary mesh plate. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] Please refer to Figures 1-5 , an embodiment provided by the present invention:

[0026] A wet flue gas desulfurization device includes a desulfurization tank 100. Exhaust pipes 110 and pressure gauges 120 are assembled on both sides of the top of the desulfurization tank 100. A support frame 101 is supported at the bottom of the desulfurization tank 100, and brackets 102 are assembled between the support frames 101;

[0027] A flue gas inlet pipe 200 is assembled below the interior of the desulfurization tank 100. The lower end of the flue gas inlet pipe 200 is inserted and assembled on the outer wall of the lower part of the desulfurization tank 100. Air outlet holes 210 are evenly opened on the inner and outer walls of the flue gas inlet pipe 200. The same spray ring cover 300 and re-spray ring cover 400 are assembled on the inner wall of the desulfurization tank 100, and the re-spray ring cover 400 is located above the spray ring cover 300. A rotating rod 500 is inserted and assembled at the top of the desulfurization tank 100. A stirring outer frame 510 and a stirring inner frame 520 are suspended below the rotating rod 500 through a hanging bracket 522, and the stirring inner frame 520 is located inside the stirring outer frame 510. Inner rings 521 and outer rings 511 are fixed at both the upper and lower ends of the stirring inner frame 520 and the stirring outer frame 510, and the upper end of the stirring outer frame 510 and the upper end of the stirring inner frame 520 are supported and assembled through a reinforcing rib 512;

[0028] Furthermore, the lower end of the flue gas inlet pipe 200 and the lower side wall of the desulfurization tank 100 are sealed and assembled through a sealing flange 201, and the air outlet 210 is provided in the middle and lower part of the side wall of the flue gas inlet pipe 200, and the air outlet 210 is inclined from the inside to the outside. Through this design, it is easy to flow the flue gas into the desulfurization tank 100, while it is not easy for liquid to enter through the air outlet 210, making subsequent use more convenient;

[0029] Furthermore, the spray ring cover 300 and the complex spray ring cover 400 are evenly equipped with spray heads 301, and the two groups of spray heads 301 are respectively installed horizontally and tilted. The side of the spray ring cover 300 is connected and equipped with a liquid inlet pipe 302, which is installed on the side wall of the desulfurization tank 100, and the outer end of the liquid inlet pipe 302 is integrally provided with a docking joint 303. Through this design, it is convenient to perform a wide spray operation inside the desulfurization tank 100;

[0030] Further, a liquid collecting bin 410 is installed at the bottom of the desulfurization tank 100, and a groove connected to the liquid collecting bin 410 is opened at the bottom of the desulfurization tank 100, a filter cover 420 is installed inside the liquid collecting bin 410, a lower night pipe 430 is integrally arranged at the bottom of the liquid collecting bin 410, a plug 431 is threadedly sleeved at the bottom end of the lower night pipe 430, a pump 440 is arranged on the side of the lower night pipe 430, and the pump 440 is assembled on the surface of the bracket 102, the pump 440 is connected and assembled with the side of the lower night pipe 430 through a liquid extraction pipe 441, the pump 440 is connected and assembled with the re-rinsing ring cover 400 through a liquid outlet pipe 442, and the liquid outlet pipe 442 is assembled on the outer wall of the desulfurization tank 100 through a support sleeve 443. Through this design, it is convenient to recycle the spray reagent, making the operation more convenient and less likely to cause waste;

[0031] Furthermore, a sealing sleeve 432 is glued to the inner wall of the plug 431, a frame is provided on the side of the filter cover 420, and an inner handle 421 is installed on the left side of the filter cover 420, and a limiting inner ring 422 is provided at the upper and lower ends of the filter cover 420, and the limiting inner ring 422 is fixed to the inner wall of the liquid collecting bin 410, and a taking groove corresponding to the filter cover 420 is opened on the left side of the liquid collecting bin 410, and a sealing plate 411 is installed on the left side of the liquid collecting bin 410, and an outer handle 412 is installed on the outer wall of the sealing plate 411. Through this design, it is convenient to filter the sprayed reagent and it is not convenient for subsequent processing;

[0032] Furthermore, a bearing 501 is installed between the upper part of the rotating rod 500 and the top of the desulfurization tank 100, the inner ring of the bearing 501 is fixed to the outer wall of the rotating rod 500, the outer ring of the bearing 501 is fixed to the inner wall of the desulfurization tank 100, the top of the rotating rod 500 is connected to a servo motor 503 through a coupling 502, the servo motor 503 is installed on the top of the desulfurization tank 100, and the inner top wall of the desulfurization tank 100 is equipped with a maintenance cover 504, and the maintenance cover 504 is sleeved on the upper part of the rotating rod 500. Through this design, it is easy to drive and rotate the rotating rod 500, making the operation more convenient;

[0033] Furthermore, the stirring outer frame 510 and the stirring inner frame 520 are sleeved and assembled with an auxiliary mesh plate 530, and air holes are provided inside the auxiliary mesh plate 530. The three groups of auxiliary mesh plates 530 are respectively located above the spray ring cover 300 and the re-spray ring cover 400, and a guiding ring 304 is arranged on the side of the auxiliary mesh plate 530. The three groups of guiding rings 304 are respectively fixed on the top side walls of the spray ring cover 300 and the re-spray ring cover 400. Through this design, it is convenient to assist in the relative zoning treatment during the spraying of flue gas, making the operation and use more convenient.

[0034] Working principle: When desulfurizing flue gas, connect the flue gas pipeline to the flue gas inlet pipe 200. Subsequently, with the opening of the air outlet holes 210, it is convenient for the dispersed influx of flue gas. Then, cooperate with the liquid inlet pipe 302 and the docking head 303 to dock and spray the reaction reagent. Spray the flue gas through the spray ring cover 300 and the spray heads 301. During spraying, drive the rotating rod 500 to rotate through the servo motor 503, thereby driving the stirring outer frame 510 and the stirring inner frame 520 to rotate inside the desulfurization tank 100. On one hand, it is convenient to stir the flue gas and the spraying liquid for full reaction. After the spray heads 301 spray, through the liquid collection chamber 410 and after being filtered by the filter cover 420, through the lower liquid pipe 430 and in cooperation with the pump 440, supply the re-spray ring cover 400 through the liquid outlet pipe 442, facilitating re-spraying through the re-spray ring cover 400, facilitating the reuse of the reagent and the repeated spraying of the flue gas, making the use more convenient. After processing for a period of time, the filter cover 420 can be taken out by disassembling the sealing plate 411, facilitating the dumping of the solid waste at the filtration site, making the use more convenient and efficient. The operation ends here.

[0035] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention in any form; any ordinary technical personnel in the industry can smoothly implement the present invention according to the instructions in the drawings and the above description; however, any minor changes, modifications, and equivalent variations made by those skilled in the art within the scope of the technical solution of the present invention by using the technical content disclosed above are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications, and variations made to the above embodiments based on the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A wet flue gas desulfurization device, comprising a desulfurization tank (100), wherein an exhaust pipe (110) and a pressure gauge (120) are mounted on both sides of the top of the desulfurization tank (100), a support frame (101) is supported at the bottom of the desulfurization tank (100), and a bracket (102) is mounted between the support frames (101); Features: A flue gas inlet pipe (200) is installed at the lower part of the desulfurization tank (100), and the lower end of the flue gas inlet pipe (200) is inserted and installed on the lower outer wall of the desulfurization tank (100). The inner and outer walls of the flue gas inlet pipe (200) are evenly provided with air outlet holes (210). The inner wall of the desulfurization tank (100) is equipped with the same spray ring cover (300) and the double spray ring cover (400), and the double spray ring cover (400) is located above the spray ring cover (300). The top of the desulfurization tank (100) is inserted and installed The invention is provided with a rotating rod (500), and an outer stirring frame (510) and an inner stirring frame (520) are suspended below the rotating rod (500) through a suspension bracket (522), and the inner stirring frame (520) is located inside the outer stirring frame (510), and the inner stirring frame (520) and the outer stirring frame (510) are fixed with an inner ring (521) and an outer ring (511) at both upper and lower ends, and the upper ends of the outer stirring frame (510) and the inner stirring frame (520) are supported and assembled by reinforcing ribs (512).

2. A wet flue gas desulfurization device according to claim 1, characterized in that: The lower end of the flue gas inlet pipe (200) and the lower side wall of the desulfurization tank (100) are sealed and assembled via a sealing flange (201); the air outlet hole (210) is provided in the lower middle part of the side wall of the flue gas inlet pipe (200), and the air outlet hole (210) is inclined from the inside to the outside.

3. A wet flue gas desulfurization device according to claim 1, characterized in that: The spray ring cover (300) and the complex spray ring cover (400) are evenly equipped with spray heads (301), and the two groups of spray heads (301) are respectively equipped horizontally and tilted. The side of the spray ring cover (300) is connected and equipped with a liquid inlet pipe (302). The liquid inlet pipe (302) is installed on the side wall of the desulfurization tank (100), and a docking joint (303) is integrally provided at the outer end of the liquid inlet pipe (302).

4. A wet flue gas desulfurization device according to claim 1, characterized in that: The bottom of the desulfurization tank (100) is equipped with a liquid collecting bin (410), and the bottom of the desulfurization tank (100) is provided with a groove connected to the liquid collecting bin (410), and a filter cover (420) is installed inside the liquid collecting bin (410). The bottom of the liquid collecting bin (410) is integrally provided with a lower night pipe (430), and a plug (431) is threadedly sleeved at the bottom end of the lower night pipe (430). A pump (440) is provided on the side of the lower night pipe (430), and the pump (440) is assembled on the surface of the bracket (102). The pump (440) is connected and assembled with the side of the lower night pipe (430) through a liquid extraction pipe (441), and the pump (440) is connected and assembled with the complex leaching ring cover (400) through a liquid outlet pipe (442), and the liquid outlet pipe (442) is assembled on the outer wall of the desulfurization tank (100) through a supporting sleeve (443).

5. A wet flue gas desulfurization device according to claim 4, characterized in that: A sealing sleeve (432) is glued to the inner wall of the plug (431), a frame is provided on the side of the filter cover (420), and an inner handle (421) is installed on the left side of the filter cover (420), limiting inner rings (422) are provided at the upper and lower ends of the filter cover (420), and the limiting inner ring (422) is fixed to the inner wall of the liquid collecting bin (410), a taking groove corresponding to the filter cover (420) is opened on the left side of the liquid collecting bin (410), and a sealing plate (411) is installed on the left side of the liquid collecting bin (410), and an outer handle (412) is installed on the outer wall of the sealing plate (411).

6. A wet flue gas desulfurization device according to claim 1, characterized in that: A bearing (501) is installed between the upper part of the rotating rod (500) and the top of the desulfurization tank (100), the inner ring of the bearing (501) is fixed to the outer wall of the rotating rod (500), and the outer ring of the bearing (501) is fixed to the inner wall of the desulfurization tank (100). The top of the rotating rod (500) is connected to a servo motor (503) through a coupling (502), and the servo motor (503) is installed on the top of the desulfurization tank (100). A maintenance cover (504) is installed on the inner top wall of the desulfurization tank (100), and the maintenance cover (504) is sleeved on the upper part of the rotating rod (500).

7. A wet flue gas desulfurization device according to claim 1, characterized in that: The outer stirring frame (510) and the inner stirring frame (520) are sleeved with auxiliary mesh plates (530), and air holes are opened inside the auxiliary mesh plates (530). Three groups of the auxiliary mesh plates (530) are respectively located above the spray circle cover (300) and the complex spray circle cover (400), and guide rings (304) are arranged on the sides of the auxiliary mesh plates (530), and the three groups of the guide rings (304) are respectively fixed on the top side walls of the spray circle cover (300) and the complex spray circle cover (400).

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